I'm also in the don't bother camp. My plane was on its gear for over 2 years before first flight. Now 2 years after first flight (190hrs+ hobbs time) I'm still on the same set of stock tubes and tires.

Im with those that say put the tires on once and leave them on. like Auburntsts, I had my tires on for about 2 years and since it sat in my garage I had a hard time moving it much but if you move it back or forward a foot when done than move it again when working on it you will see no issues at all with flat spots. Just keep the tires at 45-50psi.
Personally, as for degradation, I think its better to get them stretched and used than leave them on a shelf for 2 years waiting, but than again it may make no difference.

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